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Optimized geometric quantum computation with a mesoscopic ensemble of Rydberg atoms (2020)
Journal Article
Guo, C., Yan, L., Zhang, S., Su, S., & Li, W. (2020). Optimized geometric quantum computation with a mesoscopic ensemble of Rydberg atoms. Physical Review A, 102(4), Article 042607. https://doi.org/10.1103/physreva.102.042607

We propose a nonadiabatic non-Abelian geometric quantum operation scheme to realize universal quantum computation with mesoscopic Rydberg atoms. A single control atom entangles a mesoscopic ensemble of target atoms through long-range interactions bet... Read More about Optimized geometric quantum computation with a mesoscopic ensemble of Rydberg atoms.

Long-Range Multibody Interactions and Three-Body Antiblockade in a Trapped Rydberg Ion Chain (2020)
Journal Article
Gambetta, F. M., Zhang, C., Hennrich, M., Lesanovsky, I., & Li, W. (2020). Long-Range Multibody Interactions and Three-Body Antiblockade in a Trapped Rydberg Ion Chain. Physical Review Letters, 125(13), https://doi.org/10.1103/physrevlett.125.133602

Trapped Rydberg ions represent a flexible platform for quantum simulation and information processing which combines a high degree of control over electronic and vibrational degrees of freedom. The possibility to individually excite ions to high-lying... Read More about Long-Range Multibody Interactions and Three-Body Antiblockade in a Trapped Rydberg Ion Chain.

Dynamical excitation of maxon and roton modes in a Rydberg-dressed Bose-Einstein condensate (2020)
Journal Article
McCormack, G., Nath, R., & Li, W. (2020). Dynamical excitation of maxon and roton modes in a Rydberg-dressed Bose-Einstein condensate. Physical Review A, 102(2), https://doi.org/10.1103/physreva.102.023319

We investigate the dynamics of a three-dimensional Bose-Einstein condensate of ultracold atomic gases with a soft-core shape long-range interaction, which is induced by laser dressing the atoms to a highly excited Rydberg state. For a homogeneous con... Read More about Dynamical excitation of maxon and roton modes in a Rydberg-dressed Bose-Einstein condensate.

Structural phase transitions of optical patterns in atomic gases with microwave-controlled Rydberg interactions (2020)
Journal Article
Shi, Z., Li, W., & Huang, G. (2020). Structural phase transitions of optical patterns in atomic gases with microwave-controlled Rydberg interactions. Physical Review A, 102(2), https://doi.org/10.1103/physreva.102.023519

Spontaneous symmetry breaking and formation of self-organized structures in nonlinear systems are intriguing and important phenomena in nature. Advancing such research to new nonlinear optical regimes is of much interest for both fundamental physics... Read More about Structural phase transitions of optical patterns in atomic gases with microwave-controlled Rydberg interactions.

Landau-Zener transitions and adiabatic impulse approximation in an array of two Rydberg atoms with time-dependent detuning (2020)
Journal Article
Niranjan, A., Li, W., & Nath, R. (2020). Landau-Zener transitions and adiabatic impulse approximation in an array of two Rydberg atoms with time-dependent detuning. Physical Review A, 101(6), https://doi.org/10.1103/physreva.101.063415

We study the Landau-Zener (LZ) dynamics in a setup of two Rydberg atoms with time-dependent detuning, both linear and periodic, using both the exact numerical calculations as well as the method of adiabatic impulse approximation (AIA). By varying the... Read More about Landau-Zener transitions and adiabatic impulse approximation in an array of two Rydberg atoms with time-dependent detuning.

Submicrosecond entangling gate between trapped ions via Rydberg interaction (2020)
Journal Article
Zhang, C., Pokorny, F., Hennrich, M., Li, W., Lesanovsky, I., Higgins, G., & Pöschl, A. (2020). Submicrosecond entangling gate between trapped ions via Rydberg interaction. Nature, 580(7803), 345-349. https://doi.org/10.1038/s41586-020-2152-9

© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Generating quantum entanglement in large systems on timescales much shorter than the coherence time is key to powerful quantum simulation and computation. Trapped ions are amo... Read More about Submicrosecond entangling gate between trapped ions via Rydberg interaction.

Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice (2020)
Journal Article
Li, Y., Cai, H., Wang, D., Li, L., Yuan, J., & Li, W. (2020). Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice. Physical Review Letters, 124(14), https://doi.org/10.1103/physrevlett.124.140401

Collective excitations (spinwaves) of long-lived atomic hyperfine states can be synthesized into a Bose-Hubbard model in momentum space. We explore many-body ground states and dynamics of a two-leg momentum-space lattice formed by two coupled hyperfi... Read More about Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice.

Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing (2020)
Journal Article
Yan, D., Wang, B., Bai, Z., & Li, W. (2020). Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing. Optics Express, 28(7), 9677-9689. https://doi.org/10.1364/OE.389247

We study electromagnetically induced transparency in a three-level ladder type configuration in ultracold atomic gases, where the upper level is an electronically highly excited Rydberg state. An effective distance dependent two-body dephasing can be... Read More about Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing.

Phase synchronization in coupled bistable oscillators (2020)
Journal Article
Jessop, M. R., Li, W., & Armour, A. D. (2020). Phase synchronization in coupled bistable oscillators. Physical Review Research, 2(1), Article 013233. https://doi.org/10.1103/physrevresearch.2.013233

We introduce a simple model system to study synchronization theoretically in quantum oscillators that are not just in limit-cycle states, but rather display a more complex bistable dynamics. Our oscillator model is purely dissipative, with a two-phot... Read More about Phase synchronization in coupled bistable oscillators.

Controlling the dynamical scale factor in a trapped atom Sagnac interferometer (2020)
Journal Article
Zhou, Y., Lesanovsky, I., Fernholz, T., & Li, W. (2020). Controlling the dynamical scale factor in a trapped atom Sagnac interferometer. Physical Review A, 101(1), Article 012517. https://doi.org/10.1103/physreva.101.012517

Sagnac interferometers with massive particles promise unique advantages in achieving high-precision measurements of rotation rates over their optical counterparts. Recent proposals and experiments are exploring nonballistic Sagnac interferometers whe... Read More about Controlling the dynamical scale factor in a trapped atom Sagnac interferometer.

Engineering non-binary Rydberg interactions via electron-phonon coupling (2020)
Journal Article
Gambetta, F. M., Li, W., Schmidt-Kaler, F., & Lesanovsky, I. (2020). Engineering non-binary Rydberg interactions via electron-phonon coupling. Physical Review Letters, 124(4), https://doi.org/10.1103/PhysRevLett.124.043402

Coupling electronic and vibrational degrees of freedom of Rydberg atoms held in optical tweezers arrays offers a flexible mechanism for creating and controlling atom-atom interactions. We find that the state-dependent coupling between Rydberg atoms a... Read More about Engineering non-binary Rydberg interactions via electron-phonon coupling.

Engineering NonBinary Rydberg Interactions via Phonons in an Optical Lattice (2020)
Journal Article
Gambetta, F., Li, W., Schmidt-Kaler, F., & Lesanovsky, I. (2020). Engineering NonBinary Rydberg Interactions via Phonons in an Optical Lattice. Physical Review Letters, 124(4), Article 043402. https://doi.org/10.1103/physrevlett.124.043402

Coupling electronic and vibrational degrees of freedom of Rydberg atoms held in optical tweezer arrays offers a flexible mechanism for creating and controlling atom-atom interactions. We find that the state-dependent coupling between Rydberg atoms an... Read More about Engineering NonBinary Rydberg Interactions via Phonons in an Optical Lattice.

Highly efficient vortex four-wave mixing in asymmetric semiconductor quantum wells (2020)
Journal Article
Qiu, J., Wang, Z., Ding, D., Li, W., & Yu, B. (2020). Highly efficient vortex four-wave mixing in asymmetric semiconductor quantum wells. Optics Express, 28(3), 2975-2986. https://doi.org/10.1364/OE.379245

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement Orbital angular momentum (OAM) is an important property of vortex light, which provides a valuable tool to manipulate the light-matter interaction in the st... Read More about Highly efficient vortex four-wave mixing in asymmetric semiconductor quantum wells.

Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices (2020)
Journal Article
Zhou, Y., Li, Y., Nath, R., & Li, W. (2020). Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices. Physical Review A, 101(1), https://doi.org/10.1103/physreva.101.013427

We study dynamics of bosonic atoms on a two dimensional square lattice, where atomic interactions are long ranged with either a box or soft-core shape. The latter can be realized through laser dressing ground state atoms to electronically excited Ryd... Read More about Quench dynamics of Rydberg-dressed bosons on two-dimensional square lattices.

Shuttling of Rydberg ions for fast entangling operations (2019)
Journal Article
VOGEL, J., LI, W., MOKHBERI, A., LESANOVSKY, I., & SCHMIDT-KALER, F. (2019). Shuttling of Rydberg ions for fast entangling operations. Physical Review Letters, 123(15), https://doi.org/10.1103/PhysRevLett.123.153603

We introduce a scheme to entangle Rydberg ions in a linear ion crystal, using the high electric polarizability of the Rydberg electronic states in combination with mutual Coulomb coupling of ions that establishes common modes of motion. After laser i... Read More about Shuttling of Rydberg ions for fast entangling operations.

Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas (2019)
Journal Article
Hang, C., Li, W., & Huang, G. (2019). Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas. Physical Review A, 100(4), 1-13. https://doi.org/10.1103/physreva.100.043807

Understanding and manipulating the non-Hermitian optical property based on coherent atomic gases is of great importance and has attracted much theoretical and experimental attentions. Advancing this study to the nonlinear optics regime is highly desi... Read More about Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas.

Exploring nonequilibrium phases of the generalized Dicke model with a trapped Rydberg-ion quantum simulator (2019)
Journal Article
Gambetta, F. M., Lesanovsky, I., & Li, W. (2019). Exploring nonequilibrium phases of the generalized Dicke model with a trapped Rydberg-ion quantum simulator. Physical Review A, 100(2), Article 022513. https://doi.org/10.1103/physreva.100.022513

Trapped ions are a versatile platform for the investigation of quantum many-body phenomena, in particular for the study of scenarios where long-range interactions are mediated by phonons. Recent experiments have shown that the trapped ion platform ca... Read More about Exploring nonequilibrium phases of the generalized Dicke model with a trapped Rydberg-ion quantum simulator.

Stable single light bullets and vortices and their active control in cold Rydberg gases (2019)
Journal Article
Bai, Z., Li, W., & Huang, G. (2019). Stable single light bullets and vortices and their active control in cold Rydberg gases. Optica, 6(3), 309-317. https://doi.org/10.1364/OPTICA.6.000309

Realizing single light bullets and vortices that are stable in high dimensions is a long-standing goal in the study of nonlinear optical physics. On the other hand, the storage and retrieval of such stable high dimensional optical pulses may offer a... Read More about Stable single light bullets and vortices and their active control in cold Rydberg gases.

Robust Rydberg gate via Landau-Zener control of Förster resonance (2018)
Journal Article
Huang, X., Ding, Z., Hu, C., Shen, L., Li, W., Wu, H., & Zheng, S. (2018). Robust Rydberg gate via Landau-Zener control of Förster resonance. Physical Review A, 98(5), Article 052324. https://doi.org/10.1103/physreva.98.052324

In this paper, we propose a scheme to implement the two-qubit controlled-Z gate via the Stark-tuned Förster interaction of Rydberg atoms, where the Förster defect is driven by a time-dependent electric field of a simple sinusoidal function while the... Read More about Robust Rydberg gate via Landau-Zener control of Förster resonance.

Devil's staircases without particle-hole symmetry (2018)
Journal Article
Lan, Z., Lesanovsky, I., & Li, W. (2018). Devil's staircases without particle-hole symmetry. Physical Review B, 97, https://doi.org/10.1103/PhysRevB.97.075117

We present and analyze spin models with long-range interactions whose ground state features a so-called devil’s staircase and where plateaus of the staircase are accessed by varying two-body interactions. This is in contrast to the canonical devil’s... Read More about Devil's staircases without particle-hole symmetry.